My Boyfriend's Mom Doesn't Like Me

Alexa
Honestly, I just need to vent but I also really need some advice. My boyfriend's mom doesn't like me. Let give a quick important detail: my boyfriend's mom is a teacher at the school he attended (he just graduated two days ago). I started to realize she didn't like me when back in January, one of our mutual friends, and his mother's student, told me that my boyfriend's mom had told her that I was going to hold him back in college and that I wasn't "good" for him. I assumed that perhaps she was beginning to feel jealous of the fact he was spending so much time with me and realized that she is no longer the only woman in his life (he's an only child). However, the past few months have proved that she obviously doesn't like me. My boyfriend, Harrison, and I have been dating for a year next month and have FaceTimed while we sleep since we started dating due to the fact that he was in a different country at the time and it helped us feel closer, but we never stopped when he came back, we just continued it. This is important due to the fact that 3 weeks ago he forgot to plug his phone in before he went to bed and it died in the middle of the night, and I, not wanting him to be late to school, texted his mother asking her to just make sure he was up in time for school. Apparently my boyfriend didn't want her to know that we had been FaceTimeing at night for almost a year now, and once I gave it away by trying to make sure he didn't rack up anymore tardies, she began to "protect" him from me. She forbid him from almost talking to me completely and wouldn't allow me to go to see his band play at a local restaurant. When Mother's Day arrived, I bought her a card and a gift, and she never thanked me. Two days ago was his graduation: my mother and I arrive and she greets my mom, not me, and pretends I don't exist. After the graduation is when she finally acknowledges me, but only after Harrison has to ask her to take a picture of us. She proceeds to drag him away and I tell him I have to leave and 😤 this woman, rOLLS HER EYES asking why I have to go (his graduation party was afterwards, but due to it being out doors and I have skin cancer, I couldn't attend) and I tell her that since my mom and I drove together, I had to go. I arrive home and later on decide to go to the party due to the fact that I knew she would resent me even more if I didn't go; however, when I show, she again pretends I don't exist. Yesterday was probably the biggest slap in the face when she left me waiting outside of her house, in the sun (again, skin cancer), for twenty minutes while she finished getting ready to drive me to Harrison's final jazz concert of his senior year. Not only that, but she told me last night that she would PURPOSEFULLY be arriving late to my graduation, but it "doesn't matter because my last name starts with a w." Needless to say, I'm quite torn. I don't know what do and I really just needed someone to rant to, so if you sat and read through all of this I greatly appreciate it.